Chemical Equilibrium

Chemistry Level 3

The above shows a container with water and carbon dioxide \((\ce{CO2}\)) gas, which have reached an equilibrium state after enough time passes at \(20\)°C. Which of the following statements is correct?

a) There are no \(\ce{CO2}\) molecules that dissolve into the water at the equilibrium state.

b) If we remove the weight, then the mass of \(\ce{CO2}\) dissolved into the water decreases.

c) If we add helium \((\ce{He})\) gas in the container, then the mass of \(\ce{CO2}\) dissolved into the water decreases.

Note: Assume that carbon dioxide \((\ce{CO2})\) gas follows Henry's law, and ignore the frictional force of the piston.

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